Tkinter 60 seconds timer

Question

i am trying to do a 60 timer for a project but i am stuck here. My variable temp doesnt update itself on my window everytime i go trough it. Anyhelp would be great.

import tkinter

root=tkinter.Tk()
root.geometry("300x250")
root.title("Time Counter")

Frame=tkinter.Frame(root)
Frame.pack(side=tkinter.TOP)

Label1=tkinter.Label(Frame,text="Timer")
Label1.pack(side=tkinter.LEFT)

def timer(*args,**kwargs):
    temp=int(temps.get())
    while temp>-1:
        temps.set(str(temp))
        root.update()
        time.sleep(1)
        temp-=1

temps=tkinter.StringVar()
temps.set("60")
temps.trace("w",timer)
label=tkinter.Label(Frame,textvariable=temps)
label.pack(side=tkinter.LEFT)
label.after(1000,timer)

root.mainloop()

Answer 1

It works fine if you just remove trace and after and call the function directly:

temps=tkinter.StringVar()
temps.set("60")
label=tkinter.Label(Frame,textvariable=temps)
label.pack(side=tkinter.LEFT)
timer()

Adding the timer() function to the trace of your StringVar leads to the function being called whenever the value of temps changes. This can't work since the function changes the value, itself.